# There are three events A,B and C one of which and only one can happen. The odds are 7 to 3 against A and 6 to 4 against B.The odds against C are

1.  3 to 7

2.  7 to 3

3.  4 to 3

4.  3 to 4

4

7 to 3

Explanation :
No Explanation available for this question

# Equation of the circle passing through (0,0),(a,b) and (b,a) is

1.  (a+b)(x2+y2)-(a2+b2)(x+y)=0

2.  (a+b)(x2+y2)-(a+b)(x+y)=0

3.  (a+b)(x2+y2)+(a2+b2)(x+y)=0

4.  (a2+b2)(x2+y2)+(a+b)(x+y)=0

4

(a+b)(x2+y2)-(a2+b2)(x+y)=0

Explanation :
No Explanation available for this question

# S=0 is a circle and P(x1,y1) is an external point to it. and

1.  (x1-g,y1-f)

2.  (x1+g,y1+f)

3.  ((x1+g)/2,(y1+f)/2)

4.  (-g/2,-f/2)

4

((x1+g)/2,(y1+f)/2)

Explanation :
No Explanation available for this question

# The locus of the point of intersection of the two tangents drawn to the circle x2+y2=a2 which include an angle α is

1.  x2+y2=a2cosec2α/2

2.  x2+y2=a2cot2α/2

3.  x2+y2=a2tanα

4.  x2+y2=a2tanα/2

4

x2+y2=a2cosec2α/2

Explanation :
No Explanation available for this question

# One letter is selected at random from the word PROBABILITY. The probability that it is a vowel is

1.  5/11

2.  2/11

3.  4/11

4.  3/11

4

4/11

Explanation :
No Explanation available for this question

# If tangent to the x2+y2=c2 makes intercepts a and b on the coordinate axes then

1.  a2+b2=c2

2.  a+b=c

3.  (1/a2)+(1/b2)=1/c2

4.  (1/a)+(1/b)=1/c

4

(1/a2)+(1/b2)=1/c2

Explanation :
No Explanation available for this question

# A lot consists of 12 good pencils,6 with minor defects and 2 with major defects. A pencil is drawn at random. The probability that this pencil is not defective is

1.  1/2

2.  2/5

3.  3/10

4.  3/5

4

3/5

Explanation :
No Explanation available for this question

# Equation of the tangent at (1,1)to the circle 2x2+2y2-2x-5y+3=0 is

1.  x+y-2=0

2.  2x-y-1=0

3.  3x+y-4=0

4.  x-y=0

4

2x-y-1=0

Explanation :
No Explanation available for this question

# Out of the digits 1 to 9,two are selected at random and one is found to be 2,the probability that their sum is odd is

1.  1/8

2.  7/8

3.  5/8

4.  3/8

4

5/8

Explanation :
No Explanation available for this question

1.  3/7

2.  4/7

3.  2/7

4.  1/7

4